I am not familiar with the device but I translated what I can.
It seems to me that there are black, yellow, red and green cable coming from TSD control unit (see pic).
Connect red cable to existing green/red cable.
Connect green cable to existing black/pink cable
Cut existing light blue cable then
Connect Yellow cable to the light blue cable on the connector (harness) side
Connect Black cable to the other side of the light blue cable
You need to screw down the dancer dash on left hand side of the E-TS control unit together
It says it has three settings: normal (no light), 50:50 (green light) and 0:100 (red light)
Hope this helps.
Ken